/*
 * Copyright 2018 cxx
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package cc.colorcat.netbird;

/**
 * Author: cxx
 * Date: 2018-8-17
 * GitHub: https://github.com/ccolorcat
 */
public abstract class Platform {
    static volatile Platform instance;

    public static Platform get() {
        if (instance == null) {
            synchronized (Platform.class) {
                if (instance == null) {
                    Platform.instance = findPlatform();
                }
            }
        }
        return instance;
    }

    private static Platform findPlatform() {
        try {
            Class<?> clazz = Class.forName("cc.colorcat.netbird.android.AndroidPlatform");
            return (Platform) clazz.newInstance();
        } catch (Exception e) {
            Log.e(e);
        }
        return new GenericPlatform();
    }

    public abstract Connection connection();

    public abstract Scheduler scheduler();

    public abstract Logger logger();
}
